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根据欧洲规范3,对于I形截面三维钢框架塑性铰,建议采用局部屈曲检验的方法。提出轴力和双向弯矩下横截面应力分布的实用方法,可直接采用横截面分类的概念。欧洲规范3中,对于满足横截面要求的塑性铰整体分析也适用于局部屈曲检验。按照所提出的方法,通过二阶塑性铰分析,对2个不同构件尺寸的三维钢构架进行研究。介绍了大量塑性铰局部屈曲检验的情况。
According to Eurocode 3, for the I-section plastic hinge of three-dimensional steel frame, it is recommended to use the method of local buckling test. A practical method for stress distribution in cross-section under axial force and two-way bending moment is proposed, and the concept of cross-section classification can be adopted directly. European Specification 3, the plastic hinge to meet the cross-sectional requirements of the overall analysis also applies to local buckling test. According to the proposed method, two-dimensional steel frame with different component sizes was studied through the second-order plastic hinge analysis. Introduced a large number of plastic hinge partial buckling test situation.